> In some dictionaries the verb "caleo" is given as beeing a loan from
> Etruscan. ...> Greek = kalein
caleo is a totally different word form calo/kalo. The root caleo shows the
typical three-fold pattern of Latin stative verbs:
caleo = to be warm
calidus = warm
calor = warmth
(for this pattern cf rigeo, rigidus, rigor; timeo, timidus, timor, and
many others).
The etymology of this word is indeed unclear.
Latin calo/kalo on the other hand is undoubtedly inherited form PIE, and
connected to Greek kalein and the others. Note that the Greek form is a
contract verb kale-ein. Note that the Latin form is first conjugation
kala-o. Note the forms in kle: and kla: or kl: (eg Latin cla:-mo, Homeric
kle:tor). These are clues that the root is not really kal- but kelH-. In
fact Greek kaleo < *klH-eyo (H1; the l is syllablic, hence > -al-).
Peter